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    <title>clEnqueueCopyBufferRect</title>
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    <div class="refentry">
      <a id="id-1"></a>
      <div class="titlepage"></div>
      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="clEnqueueCopyBufferRect"></a>
        <h1>    
            clEnqueueCopyBuffer 
        </h1>
        <p>          
            Enqueues a command to copy a rectangular region from the buffer object to another buffer object.
        </p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">             
                    <a class="link" href="scalarDataTypes.html" target="_top">cl_int</a> <strong class="fsfunc">clEnqueueCopyBufferRect </strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_command_queue</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">command_queue</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_mem</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">src_buffer</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_mem</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">dst_buffer</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">src_origin</var>[3], </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">dst_origin</var>[3], </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">region</var>[3], </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">src_row_pitch</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">src_slice_pitch</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">dst_row_pitch</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">dst_slice_pitch</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">cl_uint</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_events_in_wait_list</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_event</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event_wait_list</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_event</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*event</var><code>)</code></td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="parameters"></a>
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                    <code class="varname"> 
                        command_queue
                    </code>
                </span>
            </dt>
            <dd>
              <p> 
                        The command-queue in which the copy command will be queued. The
                        OpenCL context associated with <code class="varname">command_queue</code>, <code class="varname">src_buffer</code>, and <code class="varname">dst_buffer</code> must be the same.
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname"> 
                        src_origin
                    </code>
                </span>
            </dt>
            <dd>
              <p>
                        The (<span class="emphasis"><em>x, y, z</em></span>) offset in the memory region associated with <code class="varname">src_buffer</code>. For a 2D rectangle region, the <code class="varname">z</code> value given by <code class="varname">src_origin</code>[2] should be 0. The offset in bytes is computed as <code class="varname">src_origin</code>[2] * <code class="varname">src_slice_pitch</code> + <code class="varname">src_origin</code>[1] * <code class="varname">src_row_pitch</code> + <code class="varname">src_origin</code>[0].
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname"> 
                        dst_origin
                    </code>
                </span>
            </dt>
            <dd>
              <p> 
                        The (<span class="emphasis"><em>x, y, z</em></span>) offset in the memory region associated with <code class="varname">dst_buffer</code>. For a 2D rectangle region, the <code class="varname">z</code> value given by <code class="varname">dst_origin</code>[2] should be 0. The offset in bytes is computed as <code class="varname">dst_origin</code>[2] * <code class="varname">dst_slice_pitch</code> + <code class="varname">dst_origin</code>[1] * <code class="varname">dst_row_pitch</code> + <code class="varname">dst_origin</code>[0].
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname">region</code>
                </span>
            </dt>
            <dd>
              <p> 
                        The (<span class="emphasis"><em>width, height, depth</em></span>) in bytes of the 2D or 3D rectangle being copied. For a
2D rectangle, the <code class="varname">depth</code> value given by <code class="varname">region</code>[2] should be 1.
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname">src_row_pitch</code>
                </span>
            </dt>
            <dd>
              <p> 
                        The length of each row in bytes to be used for the memory region associated with <code class="varname">src_buffer</code>. If <code class="varname">src_row_pitch</code> is 0, <code class="varname">src_row_pitch</code> is computed as <code class="varname">region</code>[0].
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname">src_slice_pitch</code>
                </span>
            </dt>
            <dd>
              <p> 
                        The length of each 2D slice in bytes to be used for the memory region associated with <code class="varname">src_buffer</code>. If <code class="varname">src_slice_pitch</code> is 0, <code class="varname">src_slice_pitch</code> is computed as <code class="varname">region</code>[1] * <code class="varname">src_row_pitch</code>.
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname">dst_row_pitch</code>
                </span>
            </dt>
            <dd>
              <p> 
                        The length of each row in bytes to be used for the memory region associated with <code class="varname">dst_buffer</code>. If <code class="varname">dst_row_pitch</code> is 0, <code class="varname">dst_row_pitch</code> is computed as <code class="varname">region</code>[0].
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname">dst_slice_pitch</code>
                </span>
            </dt>
            <dd>
              <p> 
                        The length of each 2D slice in bytes to be used for the memory region associated with <code class="varname">dst_buffer</code>. If <code class="varname">dst_slice_pitch</code> is 0, <code class="varname">dst_slice_pitch</code> is computed as <code class="varname">region</code>[1] * <code class="varname">dst_row_pitch</code>.
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname"> 
                        event_wait_list,
                    </code>
                , </span>
              <span class="term">
                    <code class="varname">
                        num_events_in_wait_list
                    </code>
                </span>
            </dt>
            <dd>
              <p> 
Specify events that need to complete before this particular command can be executed. If <code class="varname">event_wait_list</code> is NULL, then this particular command does not wait on any event to complete. If <code class="varname">event_wait_list</code> is NULL, <code class="varname">num_events_in_wait_list</code> must be 0. If <code class="varname">event_wait_list</code> is not NULL, the list of events pointed to by <code class="varname">event_wait_list</code> must be valid and <code class="varname">num_events_in_wait_list</code> must be greater than 0. The events specified in
<code class="varname">event_wait_list</code> act as synchronization points. The context associated with events in <code class="varname">event_wait_list</code> and <code class="varname">command_queue</code> must be the same.
                    </p>
            </dd>
            <dt>
              <span class="term">
                    <code class="varname">
                        event
                    </code>
                </span>
            </dt>
            <dd>
              <p> 
Returns an event object that identifies this particular copy command and can be used to
query or queue a wait for this particular command to complete. <code class="varname">event</code> can be NULL in which case it will not be possible for the application to query the status of this command or queue a wait for this command to complete. <a class="citerefentry" href="clEnqueueBarrier.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueBarrier</span></span></a> can be used instead.
                    </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1">
        <a id="errors"></a>
        <h2>Errors</h2>
        <p>Returns <span class="errorname">CL_SUCCESS</span> if the function is executed successfully.
        Otherwise, it returns one of the following errors:</p>
        <div class="itemizedlist">
          <ul class="itemizedlist" style="list-style-type: disc; ">
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_COMMAND_QUEUE</span> if <code class="varname">command_queue</code> is not a valid command-queue.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_CONTEXT</span> if the context associated with <code class="varname">command_queue</code>, <code class="varname">src_buffer</code>, and
                <code class="varname">dst_buffer</code> are not the same or if the context associated with <code class="varname">command_queue</code> and events
                in <code class="varname">event_wait_list</code> are not the same.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_MEM_OBJECT</span> if <code class="varname">src_buffer</code> and <code class="varname">dst_buffer</code> are not valid buffer objects.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if (<code class="varname">src_offset</code>, <code class="varname">region</code>) or (<code class="varname">dst_offset</code>, <code class="varname">region</code>) require accessing elements outside the <code class="varname">src_buffer</code> and <code class="varname">dst_buffer</code> objects respectively.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_EVENT_WAIT_LIST</span> if <code class="varname">event_wait_list</code> is NULL and
                <code class="varname">num_events_in_wait_list</code> is greater than 0, or <code class="varname">event_wait_list</code> is not NULL and
                <code class="varname">num_events_in_wait_list</code> is 0, or if event objects in <code class="varname">event_wait_list</code> are not valid events.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_MEM_COPY_OVERLAP</span> if <code class="varname">src_buffer</code> and <code class="varname">dst_buffer</code> are the same buffer object and the source and destination regions overlap.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_MISALIGNED_SUB_BUFFER_OFFSET </span> if <code class="varname">src_buffer</code> is a sub-buffer object and <code class="varname">offset</code> specified when the sub-buffer object is created is not aligned to CL_DEVICE_MEM_BASE_ADDR_ALIGN value for device associated with <code class="varname">queue</code>.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_MISALIGNED_SUB_BUFFER_OFFSET </span> if <code class="varname">dst_buffer</code> is a sub-buffer object and <code class="varname">offset</code> specified when the sub-buffer object is created is not aligned to CL_DEVICE_MEM_BASE_ADDR_ALIGN value for device associated with <code class="varname">queue</code>.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_MEM_OBJECT_ALLOCATION_FAILURE</span> if there is a failure to allocate memory for data store associated with <code class="varname">src_buffer</code> or <code class="varname">dst_buffer</code>.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_RESOURCES</span> if there is a failure to allocate resources required by the
OpenCL implementation on the device.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_HOST_MEMORY</span> if there is a failure to allocate resources required by the OpenCL implementation on the host.
            </li>
          </ul>
        </div>
      </div>
      <div class="refsect1">
        <a id="specification"></a>
        <h2>Specification</h2>
        <p>
            <img src="pdficon_small1.gif" />
            
                      
            <a href="http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf#page=69" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="clEnqueueReadBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReadBuffer</span></span></a>, 
            <a class="citerefentry" href="clEnqueueReadBufferRect.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReadBufferRect</span></span></a>, 
            <a class="citerefentry" href="clEnqueueWriteBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueWriteBuffer</span></span></a>, 
            <a class="citerefentry" href="clEnqueueWriteBufferRect.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueWriteBufferRect</span></span></a>, 
            <a class="citerefentry" href="clEnqueueCopyBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyBuffer</span></span></a>, 
            <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a>, 
            <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a>, 
            <a class="citerefentry" href="clEnqueueCopyBufferToImage.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyBufferToImage</span></span></a>, 
            <a class="citerefentry" href="clEnqueueCopyImageToBuffer.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueCopyImageToBuffer</span></span></a>
        </p>
      </div>
      <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2010 The Khronos Group Inc.
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"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
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